rohrpost

commit 9e407ff5f1deb97e2e7a0e5531d08b50544638a3
parent c4140c56b7d1d9a29bda32e018e57b2782caa1eb
Author: Christoph Lohmann <20h@r-36.net>
Date:   Sun,  2 Apr 2017 17:07:44 +0200

Base64 compatible to Mozilla Thunderbird.

Diffstat:
base64.c
 | 
25
++++++++++++++++++++++++-

1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/base64.c b/base64.c
@@ -71,7 +71,7 @@ char *
 b64dec(char *istr, int *len)
 {
 	char *ret, str[5];
-	int p, po;
+	int p, po, l, uglyline;
 	char bd[256];
 
 	memset(bd, 0x80, 256);
@@ -84,6 +84,29 @@ b64dec(char *istr, int *len)
 	po = 0;
 	ret = NULL;
 
+	/*
+	 * If there is something prepended to the base64 block, take it as-is.
+	 */
+	for (uglyline = 1; uglyline == 1; l = p) {
+		uglyline = 0;
+		for (; istr[l] != '\n' && istr[l]; l++) {
+			if (istr[l] == ' ')
+				uglyline = 1;
+		}
+		/* Take care of empty lines. */
+		if ((l - p) == 1 && istr[l-1] == '\r')
+			uglyline = 1;
+		if ((l - p) == 0)
+			uglyline = 1;
+		if (uglyline)
+			po = p = l + 1;
+	}
+	if (p > 0) {
+		ret = reallocz(ret, l, 0);
+		memmove(ret, istr, p+1);
+	}
+
+
 	for (; !readnwstr(str, istr, &p, *len, 4); po += 3) {
 		ret = reallocz(ret, po + 4, 0);